Roofing



ARenamed May r2o, 1924.

IUNTTED STATES I 1,494,788 PATENT OFFICE.

FRANK J. KROMENAKER AND GRANT IVI. KROMENAKER, 0F CHICAGO', ILLINOIS.

ROOFING.

.Application l'ed September 12, 1921, Serial No. 500,157. Renewed November 4, 1922'. Serial No. 599,148..

useful Improvements in Roofing, of whichthe following is a specification.

This invention relates `to a roofing made from material in sheet form, and is part-ic- A ularly concerned with the construction of the several sheets by which they .are adapted to interlap so as to provide a rain-proof l rooting.

An exempliiication of this invention* 'is Shown 1n the accompanying drawlngs where-4 F ig. 2 is a plan view of `a single sheet; Fig. 3 is an enlarged\detail in longitudinal section taken on line 3 3 of Fig. 1.; j

Fig. 4 is an enlarged detail in transverse explained, a permanent fastening may be obtained with nails which, by preference,v "are-driven through the tongues 13 adjacent section taken on line 4 4 of Fig-.l

i sheets of slightly altered proportionsu-g *Our invention contemplates Vtheemployment of a suitable roofing material in sheet form properly prepared to withstand the usual weatherconditions encountered in use. The sheets which form the rooting are adapted to be fastened as bymeans of nails to a slanting roof in muchthe same way as is usual with other roofing materials having similar properties. Y.

In Fig. 2 we have shown a section of roofing material which, for purposes of convenience in handling and installation,v is in the form of a rectangular sheet. Slits 10 are cut through the .sheet Afrom one .of its longer edges 11 to a distancewhich is more than midway toward the opposite edge 12 and in the construction shownin Figs. 1 to 4, these slits are arranged in groups of two so as to vprovide tongues 13 betweenv which lie what may be termed slabs 14. Ihe sheet edge 12 may be provided with notches 15 located substantially midway between the'tcngues 13, as best shown in Fig. 2. It will be noted that the positions of the tongues With relation to the sheet is preferably such, that a portion of a slab is left at each end of the sheet. Half notches 16 may be provided at the extremities thereof. .'The purpose of this is to facilitate corelatloning of the sev- Figure l1 is a. plan view of several sheets.

' of roofing material in interlapped relation;l

i f ffner the third'sheet C is arranged over sheets eral sheets which, when properly interlapped, constitute the roofing of our invention. y

In Fig. 1 we have shown three full sheets properly `related to form the roofing. The under sheet is designated as A. The slit edge of this sheet, however, lies beneath a second sheet B and a third or upper sheet C. The upper and .lower edges of these last two sheets are designated as 11b and 11c andv12b and 12C, respectively. The ends of sheet B are aligned with the centers of two of the tongues 13 of sheet A, all ofthe tonguesthereof being lapped over the sheet B, as shown. The distance of overlap of sheet B y uponsheet A is determined by the len th of i the several tongues 13 which, as alrea y ex plained, are preferably slightly more thanI half the widthof each sheet. In like man'- A and B, being aligned with the ends of sheet A;

In arranging the roofing sheets as above mate edge of sheet A and the nails driven-.1

therethrough so that the tongue ends wherein the nails are secured are completely covered. It follqws, therefore, that this constructign; provides a protection for the nails, such as to; thoroughly conceal their presence. A realization of the advantages just set forth` results from forming each roofingv sheet so as to overlie the one therebeneath by something more than half its width, from which it follows that.l the first sheet is also overlapped in part by a third sheet.

"In Figs. 5 to 8 inclusive, wehave shown a similar construction, the only difference being that instead of forming slits 10 in groups of two, we have'arranged them equi- .distantly apart, with the result `that the .tongues andslabs are of the same size. The

same numerals are applied to .the several parts of these figures, and consequently no further description thereof is deemed to be necessary. The principal difference is in the optical eifect, but since the underlying principles ofthe two constructions are the same, such differences as exist are,purely in# consequential.

From the preceding description,7 it is to be observed that our invention involves' 4a1- most noadditional expense other than for u y forms other than herein shown, and in respect of any modifications which utilize the 'principles hereinbelow claimed, it is desiredl that thel 'same be includedwithin the scope of this patent.

4We claim:

1. As a new article of manufacture, a

rectangular sheet of roofing material provided with slits which extend from one of its vedges more than half way towards an opposite edge thereof.

y As anew art1cle of manufacture, a rectangularsheet' of roofing material provided with slits whichA extend from one of 40 plurality of similar rectangular sheets each its longer edges more than half way towards its opposite edge, the slits being arranged in groups of two to define tongues and slabs in alternating relation. f

3. As a new article of 'manufactura al rectangular sheet of rooling material pro vided with slits extending from one of its longer vedges more than half way towards its opposite edge, the several slits -delining tongues and slabsv in alternating relation arran ed` along. one edge of the sheet.

4. roofing comprising in combination a provided with a plurality of slits extending from one of its longer edges more than half way towards the opposite edge to define tongues said slabs in alternating relation, the adjacent sheets being laid side by side, and laid in staggered overlap ing courses, so that each sheet is covere in part by each of two ensuing courses, with the tongues overlapping the sheets aV distance equal to the length of theslits, and the extremities of the tongues being arranged to underlap the sheets of the second ensuing course.

Legame a 'plurality of similar rectangular sheets each slitted transversely to provide tongues and slabs in alternating relation, the several sheets being laid side by side and laid in staggered overlapping courses, so that each sheet is covered in part by sheets of each of two ensuing courses, with the tongues arranged to overlap the sheets of the irst ensuing course, means passing through the tongue extremities for securing the sheets to a support, theoverlapping sheets in thev second ensuing course being disposed in covering relation to' the tongue extremities thereby to conceal said securing means.

6. As a new article of manufactura a sheet of roofing-material provided on one edge with alternate tongues and slabs adapted ito be laid with the tongues to extend over and the slabs under the next higher adjacent sheet.

7. As a new' article of manufacture, a sheet of roofing material provided on one edge with alternate tongues and slabs adapt.

- ed to be laid'with the tongues to extendover and the slabs under the next higher adjacent sheet, said tongues being longer than one half the width of the sheet measured in thedirection of the length of a tongue.l v

8. As a new article of manufacture, a

sheet of roofing material provided with tongues and slabs arranged the sheet.

9. As a new article of manufacture, a substantially rectangular sheet of vroofing material provided with pairs of slits extending from one of the longer edges toward the opposite edge rto provide alternate tongues and slabs arranged onone edge of the sheet.

1Q. As a new article of manufacture, a. substantially rectangular sheet of roofing material provided with pairs of slits at right angles to the length of l. the rectangular sheet and extending from one of the longer edges toward the opposite edge to provlde alternate tongues and slabs arranged on one edge of the sheet.

FRANK J, -Kaoilmuaana e.' M. v,KarimaNanna.

Witness:

. Erinnern' BANMNG.

on one edge ef 

